node.js - 类型错误 : Socket is not a constructor

Question

我是 Angular/Node 新手，似乎无法找出我遇到的问题。

我正在尝试使用 client-ftp 连接到 ftp并且在实现方面遇到了麻烦。本质上，我在前端创建一个按钮，如下所示:

<button class="btn btn-primary" (click)="downloadFile()"><i class="fa fa-file-photo-o"></i> Download Screenshot</button>

并尝试通过这样的点击事件来实现它:

downloadFile(){
    console.log('Connecting to sftp...');
    var ftpClient = require('ftp-client'),
        config = {
            host: 'localhost',
            port: 22,
            user: 'anonymous',
            password: 'anonymous'
        },
        options = {
            logging: 'basic'
        },
        client = new ftpClient(config, options);

    console.log('Downloading Screenshot...');
    client.connect(function () {
        client.download('/sftFilepPath', './Downloads', {
            overwrite: 'none'
        }, function (result) {
            console.log(result);
        });
    });
}

我不断收到错误，但显示:TypeError: Socket is not a constructor每当按下按钮时。我的两个 console.log() 调用都显示在调试器中，因此我认为它与我尝试实际连接和下载的位置有关。

我尝试调用 FtpClient 命名空间的导入，并在构造函数中创建一个私有(private)客户端参数并对其进行处理，但这似乎也不起作用。

我知道 new 关键字隐式调用构造函数，但我没有在代码中的任何地方引用“Socket”。也许我错过了什么？

这是我的导入和构造函数供引用:

import { Component, ElementRef, Input, OnInit, OnDestroy } from '@angular/core';
import { TestInstance, Test, TestDetails } from '../../objModules/index';
import { RunServices } from './run.services';
import { Observable } from 'rxjs/Rx';
import * as $ from 'jquery';
import * as _ from 'underscore';
import { ModalController } from './run.modal.controller';
// import { FtpClient } from 'ftp-client';

@Component({
    templateUrl: './run.modal.component.html',
    moduleId: module.id.toString(),
    selector: 'app-test-data',
    providers: [ RunServices ]
})

export class ModalComponent implements OnInit, OnDestroy {
    testInstance: TestDetails;
    id: string;
    private element: JQuery;

    private runId: string;
    private test$: Observable<Test>;
    private testHistory$: Observable<TestInstance[]>;

    private test: Test;
    private testHistory: TestInstance[];
    private selectedTest: TestInstance;
    private latestRuns: TestInstance[];

    private averagePass: number;
    private averageFail: number;

    services: RunServices;

    constructor(private modalController: ModalController, private el: ElementRef, private runServices: RunServices) {
        this.element = $(el.nativeElement);
        this.services = runServices;

        // Initialize these objects so we don't get any errors
        this.test = new Test(' ', ' ', ' ', [' '], ' ', ' ');
        this.testHistory = new Array<TestInstance>(new TestInstance(' ', ' ', ' ', 0, ' ', ' ', ' ', ' ', ' '));
        this.testInstance = new TestDetails(' ', ' ', ' ', ' ', ' ', ' ', ' ', 0, null, ' ');
        this.selectedTest = new TestInstance(' ', ' ', ' ', 0, ' ', ' ', ' ', ' ', ' ');
    }

Answer 1

我的猜测是您的 ftp 客户端太旧了。系统环境变化越来越快。但这个客户端自2015年以来就没有更新过。尝试使用最新的客户端，例如jsftp